Spool winding apparatus



y 31, 1934- J. LAMBEQIK 1,968,406

SPOOL WINDI NG APPARATUS Filed Nov. 28, 1931 2 Sheets-Sheet 1 W a W INVENTOR vfialmes lamfieclr Jufiy 3i, 1934. MBEC 1,968,406

SPOOL WINDING APPARATUS Filed Nov. 28, 1931 2 Sheets-Sheet 2 INVENTOR r/ofiamres Zambezi.

Patented m 31,1934

A 1,968,406 srooL WINDING APPARATUS Johannes Lambeck, Elsterberg, Germany, as-

signor to North American Rayon Corporation, New York, N. 22, a corporation of Delaware Application November In Germany 3 Claims.

This invention relates to amethod of and apparatus for the winding of spools on artificial silk spinning machines. In the present methods for artificial silk thread and the like on spools the thread guiding and shifting meanshas been such as to produce a cylindrical yarn body with slanting ends. The slanting ends have been obtained by providing mechanism which gradually decreases the length of stroke ofthe thread shifting means. However, if a certain winding thickness, which itself depends on the degree of slant desired, is exceeded, a vertical edge of thread will be formed. Such formation possesses many disadvantages. ii The thread layers making up the vertical edge will slip and. be folded on the slanting surface during the washing and drying of the threads, forming areas of tightly packed thread. When the treated thread is rewound, the thread at those points will not unwind freely, causing. frequent breakage of the threads with the consequent loss of time and labor.

It is, therefore, an object of this invention to provide suitable mechanism which willprevent the building up of a vertical layer of thread on the spool and thus prevent the formation of tight- 1y packed layers of thread. i Another object.of this invention is to provide a suitable method of and apparatus for placing several windings on top of one another by changing the thread stroke after each winding.

These and other objects of this invention will become more apparent from a study of the following description, and the drawings in;.which:

Fig. 1 is a partial sideelevational view of a preferred embodiment of the invention, certain parts thereof being shown in cross-section;

Fig. 2 is an end elevation thereof; Fig. 3 is a view similar to that of -1, but

showing the operative parts in their opposite'po sitiom Fig. 4 is a view similar to that-of showing the stroke adjusting means in position;

Fig'. sis a'view similar to that on Fig.4, butshowing the operative parts in their opposite po-.

' sition; and Fig. 6 a cross-sectional view ofthe spool showing t 0 types of windings one on top of the other. 1

Referring ticularly to Figs. 1-3 inclusive there is shown a preferred embodiment of the invention. The thread to .be woundon the spool (10) is conveyed thereto by a thread guide (11) which is attached.

change the. length of stroke of the oscillating -th1'ead guide 11. now to the drawings, and more par- 28, 1931, Serial No. 577,847 December 4, 1930 in any suitable .manner to a thread guide rod (12) Reciprocatory motion is imparted to the thread guide rod by means of a cam (13) secured to the cam shaft (14). A stirrup-shaped lever (16) carrying rollers (17) is joumalled'in bearings (15), and is so mounted as to be reciprocated by the cam (13). The central portion of the lever (16) is provided with a slotted arm (18) which is connected to the slotted end (19) of the lever (20) by means of a nut and a bolt (18') passing through the slots.

The lever (20) is pivotally mounted at (21) to an eccentrically mounted stub shaft (22). The other end of the lever is connected-tolevers (23) which are secured to a shaft (24). To form a slidable connection between the lever (20) andthe levers (23), they are connected together by a bolt (25) riding in slots (26) formed in the ends thereof. A lever (27) is connected to the shaft (24) and one end thereof is forked so as to engage with a pin or other suitable connectin means secured to the thread guide rod. In operation, upon oscillatory movement being imparted to the cam the thread guide rod is reciprocated by the levers (20), (23) and (27).

The length of the thread guide stroke is changed automatically through the eccentric on the stub shaft 22. As shown, the mechanism for so doing is indicated by the gear 37 integrally placed on the cam shaft.14, which gear meshes with an intermediate gear 36 for the purpose. of driving the gear 35 which rotates the eccentrically mounted stub shaft 22, thereby shortening the swing of the slotted end 26 of lever 20 and so in turn shortening the swing of lever 2'1 thereby decreasing the stroke of the guide 11.

'Pivotally mounted on the shaft 24 are a pair of segmental plates 28; these plates are loosely pivoted on said shaft 24 for a purpose to be later more fully disclosed. The plates 28 are provided 95 with curved slots 29 eccentrically arranged with 5, respect to the shaft 24 m which slots the bolt 25 extends. 'It will be seen by reference to Fig- 'ures 1 and 3 if unhindered the bolt will remain.

in the left hand side of the slot because of a tendency to jam and take the path of least resistance, because of the eccentric slots 29 therebyhaving only the stub shaft 22 operating to These segments 28 can be shifted to shorten the length of the stroke by means of a hand-operated'leversystem as shown in*"the drawings. Bell crank levers 30 and 3,1 are pivotally mount- I ed on bolts 32 and 33 with a connecting rod 34 Ill Gil

to ensure said levers so and 31 working in unison. In the drawings in Figures 1 and 3 the left hand lever 30 is shown depressed or in operative posh tion and with the bolt 25 the left head end of slots 29. In Figures l andfi the hell craulr lever 31 is shown depressed or in operative position with the handle end in the path of travel oi the slotted segments 28, which on meeting said lever are stopped but the bolt 25 rides in the eccentric slot 29 to the right hand side thereby shortenmg. the pivot point of the intermediate lever 26 and decreasing the stroke of the oscillating thread uide 11.

In operation of the winding of the spools the,

stroke of the oscillating thread guide is being automatically shortened by means of the eccem trically mounted stub shaft 22 through the me= dium of gears 37, 36 and 35. Now, when the point is reached where a sufiicient thick:- ness has occurred and the danger oi a vertical edge of thread is imminent, the operator de presses the hand-operated lever mechanism 30, 31 and as in such fashion that the segmental plates 28' are caused to remain stationary as before described, the bolt 25 will ride in the slots 29 thereby shortening the thread guide stroke even more and eliminating the danger of vertical edges in the thread winding. In this manner a second slanting wind h (Fig; (-2) can be wound on the first winding 1: using the same adjustment. It is readily seen from the foregc= ing description of the operation that when the segmental plates 28 are shifted, agreater decrease in the length of the thread guide stroke is made than the normal gradual increase auto= matically effected by the eccentric on the stub shaft 22. This results in a stepping in of the second winding b as shown in Fig, 6, thus pre= venting any danger of a vertical wind.

From the above description it will he appreelated that there has been provided a simple and efiicient mechanism for producing cylindrical yarn bodies having slanting code without the production of a vertical edge of yarn which has been found to cause the breakage of thethreads during the winding thereof after the same have been washed and dried,

Although the invention has been described particular reference to the specific embodiment Leas es disclosed, it is to he understood that the invers tion is not specifically limited thereto but may be varied in many details without departing from the spirit of the invention or the scope of the appended claims:

What is claimed as new:

1. A device for winding successive layers or thread on spimihig spools comprising, a thread guide rod, a thread guide secured thereto, a shaft, a lever pivotally mounted thereon, cam actuated means for oscillating said lever, a second lever having a slidahle connection with said first'mehticned lever and having connection with said thread guide red, a plate having a curved slot formed therein and associated with said slidable connection, and means to shift said slidahle con motion along said curved slot whereby the length of the oscillation of said levers and thread guide rod may he changed.

2. A device for winding successive layers of thread on shinning spools comprising, a thread guide rod, a thread guide secured thereto, a shaft, a lever pivotally mounted thereon, cam actuated means for oscillating said lever, a second lever having a. slidahle connection with said first men-v tioned lever and having connection with said thread guide rod, aplate having a curved slot formed therein and associated with said slidahle connection, and means to shift said slidahle cou= nectioh along said curved slot whereby the length oiithe oscillation of said levers and thread guide rod may be changed, comprising a pair of spaced levers adapted to engage said plate.

3. A device for winding successive layers of thread on spinning spools comprisinga thread lid guide rod, a thread guide secured thereto, a shaft,

a lever pivotally mounted thereon, cam actuated means for oscillating'said'lever, a. second lever having a slidahle connection with said first inelitioncd lever and having connection with said 115 thread guide rod, a plate having a curved slot formed therein and associated with said slidahle connection, and means to shift said slidahle connectiou along said curved slot whereby the length of the oscillation of said levers and thread guide we rod may be changed, comprising a pair of spaced levers adapted to alternately engage said plate.

rec

JOHANNES 

